Latest Period
Q4 2025
Security Snapshot
Magnera Corp - Common Stock (MAGN) Institutional Ownership
CUSIP: 55939A107
13F Institutional Holders and Ownership History from Q3 2024 to Q1 2026
Institutions Reporting
185
Shares (Excl. Options)
37,414,547
Price
$15.14
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- Type / Class
- Equity / Common Stock
- Symbol
- MAGN on NYSE
- Shares outstanding
- 35,612,980
- Price per share
- $9.51
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 37,414,547
- Total reported value
- $566,459,638
- % of total 13F portfolios
- 0%
- Share change
- +518,587
- Value change
- +$17,263,117
- Number of holders
- 185
- Price from insider filings
- $9.51
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- MAGN - Magnera Corp - Common Stock is tracked under CUSIP 55939A107.
- 185 institutions reported positions in Q4 2025.
- 6 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 185 to 52 between Q4 2025 and Q1 2026.
- Reported value moved from $566,459,638 to $42,438,121.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 185 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 55939A107?
CUSIP 55939A107 identifies MAGN - Magnera Corp - Common Stock in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 55939A107:
Significant Owners of Magnera Corp - Common Stock (MAGN) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Cetus Capital VI, L.P. | 7.9% | +55% | $38,022,023 | +$13,387,124 | 2,803,984 | +54% | Cetus Capital VI, L.P. | 30 Jun 2025 |
| BlackRock, Inc. | 7.1% | $30,433,104 | 2,519,401 | BlackRock, Inc. | 30 Jun 2025 | |||
| MORGAN STANLEY | 6.5% | +52% | $35,167,101 | +$11,691,199 | 2,322,794 | +50% | Morgan Stanley | 31 Dec 2025 |
| Newtyn Management, LLC | 6.4% | $30,801,540 | 2,271,500 | Newtyn Management, LLC | 30 Jun 2025 | |||
| Madison Avenue Partners, LP | 5% | -38% | $26,959,026 | -$15,921,708 | 1,780,649 | -37% | Madison Avenue International LP | 31 Dec 2025 |
| Ancora Advisors LLC | 1.5% | -77% | $8,072,058 | -$20,442,255 | 533,161 | -72% | Ancora Advisors LLC | 31 Dec 2025 |
As of 31 Dec 2025, 185 institutional investors reported holding 37,414,547 shares of Magnera Corp - Common Stock (MAGN). This represents 105% of the company’s total 35,612,980 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of Magnera Corp - Common Stock (MAGN) together control 80% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| LITTLEJOHN & CO LLC | 7.3% | 2,593,887 | -19% | 20% | $39,271,449 |
| MORGAN STANLEY | 6.8% | 2,422,467 | +54% | 0% | $36,676,172 |
| BlackRock, Inc. | 6.7% | 2,375,925 | -4.9% | 0% | $35,971,505 |
| Newtyn Management, LLC | 6.6% | 2,360,000 | +4.4% | 3.8% | $35,730,400 |
| Engine Capital Management, LP | 6.3% | 2,243,827 | -17% | 4.7% | $33,971,541 |
| VANGUARD GROUP INC | 6.1% | 2,184,219 | +1.9% | 0% | $33,069,077 |
| Madison Avenue Partners, LP | 5% | 1,780,649 | -37% | 1.2% | $26,959,026 |
| Diameter Capital Partners LP | 3.4% | 1,205,793 | +162% | 1.9% | $18,255,706 |
| Jefferies Financial Group Inc. | 2.8% | 994,619 | 0.12% | $15,058,532 | |
| Nuveen, LLC | 2.3% | 823,177 | +970% | 0% | $12,462,900 |
| CANYON CAPITAL ADVISORS LLC | 2.3% | 810,000 | 0% | 1.6% | $12,263,400 |
| D. E. Shaw & Co., Inc. | 2.3% | 805,693 | +211% | 0.01% | $12,198,192 |
| GOLDMAN SACHS GROUP INC | 2.2% | 788,936 | -6.1% | 0% | $11,944,491 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 2.2% | 786,083 | +427% | 0.05% | $11,901,297 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.1% | 745,967 | -1.3% | 0% | $11,296,297 |
| Assenagon Asset Management S.A. | 2.1% | 742,425 | -1.5% | 0.02% | $11,240,315 |
| Clearline Capital LP | 1.9% | 660,605 | +272% | 0.75% | $10,001,560 |
| STATE STREET CORP | 1.8% | 640,991 | -0.41% | 0% | $9,704,604 |
| SG Americas Securities, LLC | 1.6% | 557,810 | 0.01% | $8,445,000 | |
| CITADEL ADVISORS LLC | 1.5% | 550,392 | +16% | 0.01% | $8,332,935 |
| J. Goldman & Co LP | 1.5% | 538,220 | +23% | 0.32% | $8,148,651 |
| AMERIPRISE FINANCIAL INC | 1.5% | 519,946 | +21% | 0% | $7,871,982 |
| MILLENNIUM MANAGEMENT LLC | 1.5% | 518,044 | +148% | 0.01% | $7,843,186 |
| JB CAPITAL PARTNERS LP | 1.4% | 515,000 | +203% | 1.3% | $7,797,100 |
| Ancora Advisors LLC | 1.2% | 425,514 | -76% | 0.13% | $6,442,282 |
Institutional Holders of Magnera Corp - Common Stock (MAGN) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 4,462,917 | $42,438,121 | -$29,915,826 | $9.51 | 52 |
| 2025 Q4 | 37,414,547 | $566,459,638 | +$17,263,117 | $15.14 | 185 |
| 2025 Q3 | 36,750,467 | $430,715,387 | -$35,491,046 | $11.72 | 173 |
| 2025 Q2 | 39,691,539 | $479,478,188 | +$30,588,844 | $12.08 | 182 |
| 2025 Q1 | 35,171,630 | $638,750,519 | +$3,666,137 | $18.16 | 210 |
| 2024 Q4 | 34,978,922 | $635,557,524 | +$627,755,115 | $18.17 | 227 |
| 2024 Q3 | 142,295 | $725,642 | +$725,642 | $9.50 | 4 |